How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 4/13100.0*Average seed
PAOK 0 AEK Athens 4 -0.5
Skoda Xanthi 1 Olympiakos 4 +0.2
AE Larissa 3 Ergotelis 2 -0.1
Iraklis 5 Kalamarias 2 -0.1
OFI Crete 1 Panionios 2 +0.0
Week of 4/20100.0*Average seed
AE Larissa 4 PAOK 3 -0.7
Olympiakos 3 Iraklis 1 +0.2
Aris FC 2 OFI Crete 0 +0.1
Ergotelis 2 Skoda Xanthi 0 +0.1
Points  (Full Screen)
Chance Will Win Championship  (Full Screen)